Sound-intensifier.



C. D. LYON.

'SOUND INTENSIFIER.

APPLIOATION FILED JUNE 13, 1912.

1,1 14,496, v Patented b01320, 1914.

T @FFIGE.

i iii uovenien 4 to iiu provides:

an i V a is simple "u an ordinary sound inteir in (-onirection \llll the transund intensifier sewhen the int the present inity of providing 7 r mil sound Yention use )ecial mou r e 0 Keri, the in can oe attached to the ordinary p esent iii'ention resides in A hing the sound inee of a telephone St the present novel features of meat of parts that fully described and .sreuce denote like arts wher- Figare 1 is perspective -16 xi rored sound intensifier enient inve ition; 2 is a f can r mouth-pi ece i I 11141 intensifier at- 1,4, l er n F 3 a rear elevation of is e ai uth-piw-e wngh this improved sound H attached thereto; i is a per- 2 view of the improved sound inten- "wing' an alternate form of means irhnient ieretor: i is a sectional a an ordinary nioutlr ii ce with same thereto; Fig. (3 a persperti \e the sound intensifier,

till

' tachiucni there fo and Fig. 7 is a sectional View of an ordinary mouth-piecewith same ali'zuhrd i wrto.

Tl wed sound intensifier of the bll urge

1 215 formed on the rim of same. proj ction 3 nu for attaching the shell 1 to the mouthpiece through which the sound waves pass from the mouth of the speaker to the transmitter diaphra jni (not sho\\'n),so1ne of. said perforations being located near the inner side walls of said mouth-pier and others near the cenriou rousists of a thin hollow he formed of metal, such )iuum or th like 0' any other suituzalria' The shell 1 preterahly with NulllLWTllZll of a semi-ellipsoidal "ior, the small or from end of is closed and is prel'crahl; pointed the purpose. hereinafter described. The 2r rear end of the shell 1 open and lug i or a plurality of such lu A finger or may he formed upon one or any inher of the lugs 2, so as to afiord a means of a telephone transmitter or other sound ansnutting device in the manner hereinafter described, such, for instance, as a ionograph or a dict-11g 211311 or any other und transmitting instrument.

F or the purpose of illustration, one way ith liugcrs 3, but, if desired, a finger-may he formed upon only one of said lugs or on any iuuuher or all of said lugs. (n'dunu-ily, the mouthpiece l of a telephone tansuiitter is dctachahly secured in place, and has n. wall or diaphragm 5 conining a plurality of perforations 6,

- of said wall In order to attach the i sound intensifier to theinouth-piece t, it' is only ncccss from the telephone, and hold the shell 1 in such position that the pointed end thereof will he toward thespeaker and each finger to detach the mouthpiece borne by the rear end of same in regisatzon with a perroration 6 1n the wall 5 of said mouthqaiep e and insert the sound -lar space around said shell and then through intensifier into the open front of said mouthpiece far enough to cause each finger 3 to enter the particular perforation 6 in registration therewith and, also, to cause each lug E2 to rest against the front face of said wall. The fingers 3 are of such length that, when the shell 1 is inserted into the mouthpiece 1 far enough to cause the lugs 2 to rest against the front face of the wall 5 as just described, each finger 3 will extend entirely through a LWl'fOl'iltlUll and will project beyond the rear face of wall 5, after which each finger may be bent against the rear face of said wall in the manner (10- l picted in llgii. 2 and J, or any other suitahle nltllillel' wltll the result of holding the j shell 1 fii'liiLY in place in the mouth-piece l, i

which may tlfen tic atta hed to the telephone in the usual manner. ahly arr: nged so that same will he the pari'ront face of wall 5 and. also, so that a space T will he lett between each two adjacent lugs, in order .to allow the sound waves to pass through the" perforations 6 near the inner side walls ol the mouthiece l. The shell 1 is located in the middle of the mouthpiece i and is of such size that an annular space is lefthetween same and the walls of said mouth-piece when said shell is attached to said mouth-piece as hereinabove described. if desired, however, the lingers 3 may be formed of resilient metal andbent so thatv the shell 1 am be attached to the mouth-piece without the necessity of removing the latter from the telephone.

.lVhQH the shell 1 is provided with spring fingers 3, the latter may projectoutwardly, as depicted in Figs. l and 5, in which case it is only necessary to press same inwardlyin order. to insert same into the perforations (3 inthe wall 5 of mouth-piece l, or said fingers may pro ect inwardly, as depicted in Figs. (3 and 7, so that, in order to attach the shell 1 to said mouth-piece, it is only necessary to press said fingers outwardly until same enter the perforations G in wall 5. ,ln either case, after the lin ers are inserted into perforations (3 in wall a of mouth-piece -'l-, the resiliency of said fingers holds the shell 1. in place in said mouth-piece in an obvious manner. In case it is desired to attach the sound intensifier to a mouthpiece. in the absence of perforations or the like, the fingers I, may he lorincdivith such length that same will engage the sides of the mouth-piece, and thereby hold the device in place.

\Yhen a person talks into the mouth-piece 4 of a telephone transmitter that is equipped with one of these sound iiitensifiers. the sound waves will strike. against the pointed end of the shell 1, which, in turn, will cause same to spread and pass through the annu- 'llie lugs '3 are prcferby reason 01 the concentrating etlect ol the tap red inside of the shell. and are thereby prevented from interfering with or ,roining in contact with the sound waves that lollow same into the mouth-piece 4. By means ol' this deiiee, the sound wares that enter the mouth-piece l have a free passage to the transmitter diaphragm without being hindered or weakened by the sound wares thatstrike the transmitter diaphragm and rebound therefrom, and a conticular parts of the shell 1 that touch the i'e saiion held'. over telephones that are tiil-llpptil with same is rendered more audihie than when same are not used. Further more. these devices render even a whispered 5 con i :rsati oni distinct as to give a privacy to tlie'speaker which could in no simpler or more eiircti\'e way he obtained.

l3 reasoii'ol using a shell 1 having apointed end. said shell is more effective in causing the sound wares to spread and pass around same toward the transmitter diaphragm than a shell having its end rounded or foi'iiied-\vith any other shape. This is due to the fact that the pointed shell ofi'ers less resistance to the sound waves than a shell having any other shape, and consequently reduces the friction to the minimum.

Furllie rniore, the pointing end of the shell 1 forms a tapered interior, whichis more effective. in concentrating the sound waves toward the pointed end in order to destroy same when caught in said shell.

I claim: 7

1. "A sound intensifier comprising a hollow shell bearing spacing lugs on the edge thereof. said lugs being for engagement with the diaphragm of a sound transmitter mouth piece to space said edge from the diaphragm toprovide passages that coriductsound waves to the diaphragm and having means for attaching said shell to said diapliragm.

2. In a telephone, ,the combination with the mouth-piece thereof having a perforated diaphragm of a sound intensifier comprising a hollow shell located within said mouth piece and havinga lug on the edge thereot resting against said diaphragm and a finger borne by said lug extending through a perforation in said diaphragm and being bent so as to secure said shell to said diaphragm.

3. Ina telephone, the combination with the, iiiouth-pieee thereof having a perforated diaphragm of a sound intensifier comprising a hollow shell having lugs on the edge thereof resting against one side of said diaphragm and lingers borne by some of said lugs extending through perforations in said diaphragm and being bent on the other side of said diaphragm to secure said shell to the latter.

4:. In a telephone, the combination with the mouth-piece thereof having a perforated diaphragm of a sound intensifier comprising a hollow shell having lugs on the edge thereof r :ting against one side of said diaphragm and fingers borne by some of said lugs extending through perforations in said diaphmgm and being bent on the other side of said diaphragm to secure said shell to the latter, there being a space between each two 1 adjacent lugs to allow the sound waves to pass through the perforations in said diaphragm.

5. A sound intensifier composed of a hollow shell formed with spaced lugs on the edge thereof for engagement with the diaphragm of the mouth piece of a sound trans- 2 mitter, and bendable fingers borne by some of said lugs for extension through perforations in said diaphragm and for engagement with the rear side thereof.

(3. A sound intensifier composed of a hollow shell formed with integral spaced projections to engage the diaphragm of the mouth piece of a sound transmitter, and bendable fingers for extension through per I forations in said diaphragm and for engagement with the rear side thereof.

7. A sound intensifier composed of a hollow shell, formed with integral lugs and integral fingers, the lugs being for engagement with the outer side of the diaphragm of the mouth piece of a sound transmitter and the fingers for engagement through the perforations thereof.-

8. A sound intensifier composed of a hol- 5 low shell having integral bendable means formed on its free edge for projection through the perforations of the diaphragm of a sound transmitter mouthpiece and for engagement with the rear side of said diaphragm.

9. In a telephone, the combination, with a mouthpiece having a perforated end wall, of a sound cons-error comprising a shell-like having an extending portion on the edge thereof to engage a perforation in said end wall so as to secure said member thereto, and a lug formed integral with said member and adapted to engage said end wall. i In testimony whereof, I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

CHARLES DOl/VNEY LYON.

\Vitnesses Jon; H. 'WoLr, H. \V. MAm'nLs.

1 member located within said mouthpiece and 

